The first and last terms of an arithmetic progression are 23 and 42. What is the sum of the series if it has 14 terms?
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A number is greater than five times its reciprocal by 19/2. Find the number.
The ratio of present ages of P and Q is 5 : 8. Three years later their ages will be in ratio 8 : 11. What is the present age (in years) of Q?
If a+b-62+a2b2+1+2b=2ab+2a, then the value of a is
If P = 99, then the value of P(P2+ 3P + 3) is
If x = 1 + √2 + √3, then the value of x2-2x-4=0
The cost price of an article is x. It is marked up by 150%. It is sold at Rs 600 after giving 40% discount. What is x (in Rs)?
The areas of a circle and square are equal. What is the square of the ratio of length of diameter to the length of diagonal?
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